Squeezed driving induced entanglement and squeezing among cavity modes and magnon mode in a magnon-cavity QED system

• URL: http://arxiv.org/abs/2201.09154v1
• Date: Sun, 23 Jan 2022 01:14:37 GMT
• Title: Squeezed driving induced entanglement and squeezing among cavity modes and magnon mode in a magnon-cavity QED system
• Authors: Ying Zhou, Jingping Xu, Shuangyuan Xie, Yaping Yang
• Abstract summary: We propose a scheme to generate entanglement between two cavity modes and squeeze magnon mode in a magnon-cavity QED system. The nonlinearity used in our system originates from a squeezed driving via parametric down-conversion process. We show that it is a good way to enhance entanglement and squeezing by increasing the nonlinear gain coefficient of squeezed driving.
• Score: 7.780531445879181
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: We propose a scheme to generate entanglement between two cavity modes and squeeze magnon mode in a magnon-cavity QED system, where the two microwave cavity modes are coupled with a massive yttrium iron garnet (YIG) sphere through magnetic dipole interaction. The nonlinearity used in our system originates from a squeezed driving via parametric down-conversion process, which is the reason to cause entanglement and squeezing. By using the mean field approximation and employing experimentally feasible parameters, we demonstrate that the system shows zero entanglement and squeezing without squeezed driving. Meanwhile, our QED system denotes that the entanglement between squeezed cavity mode and magnon mode can be transferred to the other cavity mode and magnon mode via magnon-cavity coupling interaction, and then the two cavity modes get entangled. A genuinely tripartite entangled state is formed. We also show that magnon mode can be prepared in a squeezed state via magnon-cavity beam-splitter interaction, which is as a result of the squeezed field. Moreover, we show that it is a good way to enhance entanglement and squeezing by increasing the nonlinear gain coefficient of squeezed driving. Our results denote that magnon-cavity QED system is a powerful platform for studying macroscopic quantum phenomena, which illustrates a new method to photon-photon entanglement and magnon squeezing.

Related papers

• Enhancement of Entanglement via Josephson Parametric Amplifier in a Dual Cavity-Magnon System [0.0]
  We describe a method to produce multipartite entanglement and quantum steering in two microwave cavities. For current dual cavity-magnon system, two-way quantum steering is found when the optomagnonical couplings are equal.
  arXiv  Detail & Related papers  (2024-02-25T09:48:04Z)
• Multimode Ultrastrong Coupling in Three-Dimensional Photonic-Crystal Cavities [36.212701687134064]
  One-dimensional photonic-crystal cavities have uniform spatial profiles in the lateral plane. Fabrication challenges have hindered the achievement of strong coupling in 3D-PCCs. We report the realization of multimode ultrastrong coupling in a 3D-PCC at terahertz frequencies.
  arXiv  Detail & Related papers  (2023-08-23T21:14:01Z)
• Enhanced bipartite entanglement and Gaussian quantum steering of squeezed magnon modes [0.0]
  We investigate a scheme to entangle two squeezed magnon modes in a double cavitymagnon system, where both cavities are driven by a two-mode squeezed vacuum microwave field. We have obtained optimal parameter regimes for achieving the strong magnon-magnon entanglement and also studied the effectiveness of this scheme towards the mismatch of both the cavity-magnon couplings and decay parameters.
  arXiv  Detail & Related papers  (2023-07-19T09:07:01Z)
• Dispersive Non-reciprocity between a Qubit and a Cavity [24.911532779175175]
  We present an experimental study of a non-reciprocal dispersive-type interaction between a transmon qubit and a superconducting cavity. We show that the qubit-cavity dynamics is well-described in a wide parameter regime by a simple non-reciprocal master-equation model.
  arXiv  Detail & Related papers  (2023-07-07T17:19:18Z)
• Resolving nonclassical magnon composition of a magnetic ground state via a qubit [44.99833362998488]
  We show that a direct dispersive coupling between a qubit and a noneigenmode magnon enables detecting the magnonic number states' quantum superposition. This unique coupling is found to enable control over the equilibrium magnon squeezing and a deterministic generation of squeezed even Fock states.
  arXiv  Detail & Related papers  (2023-06-08T09:30:04Z)
• Magnon squeezing by two-tone driving of a qubit in cavity-magnon-qubit systems [7.123040671954896]
  We propose a scheme for preparing magnon squeezed states in a hybrid cavity-magnon-qubit system. The generated squeezed states are of a magnon mode involving more than $1018$ spins and thus macroscopic quantum states.
  arXiv  Detail & Related papers  (2023-04-21T06:09:13Z)
• Quantum chaos and thermalization in the two-mode Dicke model [77.34726150561087]
  We discuss the onset of quantum chaos and thermalization in the two-mode Dicke model. The two-mode Dicke model exhibits normal to superradiant quantum phase transition. We show that the temporal fluctuations of the expectation value of the collective spin observable around its average are small and decrease with the effective system size.
  arXiv  Detail & Related papers  (2022-07-08T11:16:29Z)
• Second order nonlinearity induced multipartite entanglement in a hybrid magnon cavity QED system [0.0]
  We show that the second order nonlinearity can result in strong bipartite entanglement between cavity photons and magnonic modes under two conditions. For the later one, we also show the possibility for producing the bipartite entanglement between two magnonic modes and tripartite entanglement among the cavity photons and two magnonic modes.
  arXiv  Detail & Related papers  (2022-06-30T14:56:40Z)
• Dissipation-induced nonreciprocal magnon blockade in a magnon-based hybrid system [6.059733930380898]
  We propose an experimentally realizable nonreciprocal magnonic device at the single-magnon level. Coherent qubit-magnon coupling, mediated by virtual photons in a microwave cavity, leads to the energy-level anharmonicity of the composite modes. Dissipative counterpart, induced by traveling microwaves in a waveguide, yields inhomogeneous broadenings of the energy levels.
  arXiv  Detail & Related papers  (2021-12-04T14:49:09Z)
• A low-loss ferrite circulator as a tunable chiral quantum system [108.66477491099887]
  We demonstrate a low-loss waveguide circulator constructed with single-crystalline yttrium iron garnet (YIG) in a 3D cavity. We show the coherent coupling of its chiral internal modes with integrated superconducting niobium cavities. We also probe experimentally the effective non-Hermitian dynamics of this system and its effective non-reciprocal eigenmodes.
  arXiv  Detail & Related papers  (2021-06-21T17:34:02Z)
• Hot-spots and gain enhancement in a doubly pumped parametric down-conversion process [62.997667081978825]
  We experimentally investigate the parametric down-conversion process in a nonlinear bulk crystal, driven by two non-collinear pump modes. The experiment shows the emergence of bright hot-spots in modes shared by the two pumps, in analogy with the phenomenology recently observed in 2D nonlinear photonic crystals.
  arXiv  Detail & Related papers  (2020-07-24T09:39:03Z)

This list is automatically generated from the titles and abstracts of the papers in this site.

This site does not guarantee the quality of this site (including all information) and is not responsible for any consequences.